Though they are usually responsible, these sergeants major created their own hell in Arizona when they donned gas masks and ...

Following is a transcript of the video. Narrator: These Army infantry recruits are being exposed to CS gas, more commonly known as tear gas to experience its effects and to learn how to properly ...

"If they're freaking out, we have them look at us and breathe. If we have to, we pull them out of the gas chamber and let them take their mask off and get a few more breathes before we send them ...